Mirum Pharmaceuticals MIRM Institutional Ownership

Updated Oct 11, 2026

Mirum Pharmaceuticals, Inc. (NASDAQ:MIRM) appeared in the 13F filings of 325 institutional investors for the quarter ended June 30, 2026.

• Total shares held in MIRM rose 4.42% from Q1 2026; the number of holders rose 54.76% from Q2 2025.
• Looking at the 325 holders of MIRM individually, 187 added to their positions, 100 reduced their stakes and 38 left their positions unchanged.
• Combined, institutional investors held 71.08Mn shares of MIRM as of Q2 2026, up 3.01Mn from the prior quarter and up 17.69Mn from a year earlier.
• Frazier Life Sciences Management, L.P. held the largest position in MIRM at 7.68Mn shares as of June 30, 2026.
• Among holders that already owned Mirum Pharmaceuticals, the biggest buyers in Q2 2026 were FMR LLC (+1.7Mn shares), Invesco Ltd. (+1.08Mn shares), William Blair Investment Management, LLC (+1.07Mn shares), Vanguard Portfolio Management LLC (+944.94K shares) and T. Rowe Price Associates Inc (+938.19K shares).
• The largest position reductions in MIRM for Q2 2026 were by BVF Inc (-528.7K shares), Soleus Capital Management, L.P. (-325.31K shares), BNP Paribas Financial Markets (-304.99K shares), Millennium Management LLC (-272.36K shares) and Novo Holdings A/S (-200K shares).
• Business Quant data shows the 10 biggest positions in Mirum Pharmaceuticals as of Q2 2026 were held by Frazier Life Sciences Management, L.P. (7.68Mn shares), Jupiter Topco LLC (5.91Mn shares), BlackRock, Inc. (4.39Mn shares), FMR LLC (3.67Mn shares), T. Rowe Price Associates Inc (2.66Mn shares), Vanguard Portfolio Management LLC (2.38Mn shares), Vanguard Capital Management LLC (2.25Mn shares), State Street Corp (2.17Mn shares), William Blair Investment Management, LLC (1.4Mn shares) and Geode Capital Management, LLC (1.39Mn shares).